I too am getting this problem. I am using latest Edgy for evolution and uw-imap with an imap connection mainly. However, I have other connections, some active, some not, to various other makes of imap server (including exchange).
I have probably got a 100 or so folders altogether. Every couple of days I get a "too many open files" message from evolution (not the data server). But, during those two days, the opening of messages gets progressively slower and slower. From a subjective point of view, it seems to have got worse from Dapper->Edgy, to the extent that I am now actively looking for an alternative MTA. As soon as I can export my calendar and contacts I shall be changing (even though I don't really like the alternatives as much and it will cause no end of aggravation doing the change). For what it is worth, I enclose an lsof dump. As you can see, the problem appears to be the accretion of 'pipes' over time. It may be something to do with the opening of (pdf) attachments. As an aside, why are we (still) using pipes for network based programs in 2006? ** Attachment added: "lsof dump after "too many files" message" http://librarian.launchpad.net/5062182/evo-13nov -- Too many open files https://launchpad.net/bugs/43900 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs